Means for vertically positioning spinning or twister rings



2,279,785 R ING I R; HARGREAVES ETAL MEANS F R VERTICALLY POSITIONING ASPINNING on 'I'WISTEB April 14, 1942.

'2 Sheets-Sheet 1 Filed Mafch 1 1941 cream p l, 1942- I R. HAR-GRE-AVESEI'AL 2,279,785

MEANS FOR VERTICALLY POSITIONING A SPINNING OR TWISTER RING Filed March10, 1941 2 Sheets-Sheet 2 twister ring Patented Apr. 14, 1942- MEANS FORVERTICALLY POSITIONIN G SPINNWG R TWISTER RINGS Robert Hargreaves anville, Mass.,

a Albert 0. Roy, Whitinsassignors' to Whitin Machine Works,Whitinsville, Mass, a corporation of Massachusetts Application March 10,1941, Serial No. 382,49 7 Claims. (Cl. 57-137) This invention relates toring spinning and ring twisting machines in which the spun or twistedyarn is wound, on a rotated spool or bobbin. Where a spool or bobbin isused which has a lower head or flange, it is important that the ring andspool coact in accurate and predetermined vertical relation, in orderthat the lower end of the yarn body may be so formed with relation tothe flange or head that the thread will not catch or break whenunwinding therefrom. This is particularly important where rayon or othersynthetic 'fibres are used to form the yarn.

It is found that spool heads or flanges vary substantially in thickness,so that relative vertical adjustment between the spool-supportingspindle and the spinning or twisting ring is desirable, in order toestablish and maintain correct vertical winding relationship.

To the accomplishment of this result, it is the general object of ourinvention to provide an improved construction by which the spinning ormay be vertically adjusted relative to the spool-supporting spindle.

A further object is to provide a construction in which the ring is heldfrom angular displacerelative vertical movement between the spindle andspool on the one hand, and the ring rail and ring on the other. It isimmaterial for the purposes of our invention whether the ring railsupports are vertically reciprocated, or whether the spindles III aremounted for vertical movement with a movable spindle rail (not shown).

Our invention relates particularly to the means for mounting the ring Ron the ring rail I 4 and for providing vertical adjustment of the ringrelative to the rail. The ring R is seated in a circumferential recessin the upper face of the bracket l2 and is secured therein by aplurality of screws 51. The rear face of the bracket 12 is provided withparallel ribs (Fig. 1) which are vertically slidable in correspondinggrooves 22 (Fig. 2) in the front .face of the ring rail M; The bracketl2 isslotted as indicated at 24 in Fig. 2 to receive clamping bolts(Fig. 1) by which the ment relative to its horizontal plane during suchvertical adjustment.

Our invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

Preferred forms of our invention are shown in the drawings, in whichFig. l is a plan view of portions of a ring twister embodying ourimprovements;

Fig. 2 is a front elevation thereof;

Fig. 3 is a side elevation, looking in the direction of the arrow 3 inFig. 1;

Fig. 4 is a sectional side elevation, the line t-t in Fig. 1;

Fig. 5 is a plan view of a modified construction;

Fig. 6 is a sectional side elevation thereof, taken along the line t.--@in Fig. 5; and

Fig. 7 is a sectional front elevation, taken along the line l-l in Fig.5.

Referring to Fig. 3, we have shown a twister spindle in and a spool S,mounted for rotation within a twister ring R. The yarn Y is guided by atraveler T rotatable on the ring R in the lsual manner, and is woundirag of the traveler. I. bracket 52 which is Front face of a ring n theusual manner Any usual provision taken along on the spool S by the Thering R is mounted invertical adjustment of the ring rail may beretained.

In order to provide accurate vertical adjustment for the bracket l2, weform the bracket with a recess 21 (Fig 4) in its vertical flange portionand we provide an adjusting screw 28 having a flanged neck portion 29adapted to be received in a slot in the upper end wall 30 of the recess21.

A plug 32 is mounted in a horizontal opening 33 in the ring rail M andis threaded to receive the screw 28. By loosening the bolts 25 andturning the screw 28, the bracket l2 may be easily and accuratelyadjusted vertically relative to the rail it, after which the bolts 25may be tightened to preserve the adjustment.

The construction thus described provides a simple and reliable means forvertically adjusting each ring R and bracket l2 relative to the ringrail It. The ribs 20 on the brackets l2 prevent angular displacement ofthe brackets and the broad fiat engaging surfaces of the bracket l2bracket relative to the and ring rail it maintain the ring at all timesparallel with its initial horizontal position. All of the rings are thusaccurately maintained in the same horizontal plane or parallel thereto.

The rings'R may thus be very easily adjusted relative to the spindles Hito correspond to the particular thickness of spool head or flange insurface, means to guide said the corresponding recess 43 in the bracketis also elliptical. provide spacev at the opposite ends of the longdiameter of the ellipse for oil recesses 45 (Fig. '7) from which thering R may be slightly lubricated during the operation of the machine.

Except as above described, the bracket 40 is similar in constructionto'the bracket 12 and is similarly effective in providing accurate andconvenient vertical adjustment for the ring R relative to its ring rail.

In practice, it is customary to form the brackets H or 40 of aluminum orsome other light but-rigid metal so as to reducethe load on the ringrail. This is particularly important if the ring rail is verticallyreciprocated.

Having thus described our invention and the advantages thereof, we donot wish to be limited to the details herein disclosed, otherwise ,thanas set forth in the claims, but what we claim is: v

1. In a machine for making yarn, a ring, a ring rail having an extendedvertical supporting surface, a bracket providing a support for said ringand having an extended vertical attaching surface, means to move saidbracket vertically relative to said rail, and means to clamp saidbracket and rail together with said vertical surfaces abutting andfirmly engaging.

2. In a machine for making yarn, a ring, a

ring rail having an extended vertical supporting surface, a bracketproviding a support for said ring and having an extended verticalattachin bracket for straight line vertical movement relative to saidrail, means to mine said bracket vertically, and means to clamp saidbracket and rail together with said vertical surfaces abutting andfirmly eng 3. In a machine for making yarn, a ring, a ring rail havingan extended vertical supporting surface, a bracket providing a supportfor said ring and having an extended vertical attaching This ellipticaloutline is adopted to.

surface, coacting ribs and grooves on said bracket and rail effectivetoguide said bracket for straight line vertical movement relative to saidrail, means to move said bracket vertically, and means to clamp saidbracket and rail together with said vertical surfaces abutting andfirmly engaging.

4. In a ,machine for making yarn, a ring, a

' ring rail having an extended vertical supporting surface, a bracketproviding a support for said ring and having an extended verticalattaching surface, an adjusting screw mounted for rotation in saidbracket but held from axial movement therein, a member seated in saidrail and transversely threaded to receive said screw, said bracket beingshiftable vertically relative ,to said rail by rotation of said screw,and means to clamp said bracket and rail together with said verticalsurfaces abutting and firmly engaging.

5. In a machine for making yarn, a ring, a ring rail having an extendedvertical supporting surface, a bracket having a vertical rear flange andhaving an elliptical opening in'its horizontal portion, 'a retainer inwhich said ring is mounted, said retainer being elliptical in peripheraloutline and being seated in said elliptical opening, means to hold saidretainer in said bracket, and means to secure the vertical flange ofsaid bracket against the vertical supporting surface of said ring rail.

6. The combination in a machine for making yarn as set forth in claim 5,in which the elliptical retainer is provided with recesses in its uppersurface at opposite ends of its long diameter to receive a lubricant forsaid ring.

7. In a machine for making yam, a ring, a ring holder, 9. ring rail,means to clamp said holder to said rail, and screw-adjusting means tochange the vertical relationship of said ring and holder to said rail.

ROBERT HARGREAVES. 4 ALBERT o. ROY.

